APG stocks the H2.5X39, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 39 mm (1.535 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 44 mm (1.73 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The compound resists hydraulic fluids, water, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present.
You will find this material specified across automotive, agricultural equipment, and fluid power.
Reference part number H2.5X39 when ordering; the item is sold individually. Unit weight is approximately 0.7816 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description 2.5MM CS X 39MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 44 mm (1.73 inch)
Actual_CS 2.5 mm (0.098 inch)
Actual_ID 39 mm (1.535 inch)
ProductCode Description O-Rings - Metric - Commodity